Hi @BucksBees , it’s sad to find all the bees dead like that. I agree with @Outbeck , I think your colony starved to death, then the beetles laid eggs in the unprotected brood. If left long enough, the beetle larvae would have consumed the dead bees as well. Your mission now should be to make sure that as few beetle larvae make it to ground as possible. That’s where they’ll complete their life cycle, before emerging as more beetles. The mold would simply be a result of the wet weather.